Hi Conal,
On Sun, Jan 15, 2012 at 6:45 AM, Conal Elliott co...@conal.net wrote:
I'm using haskell-src-exts together with SYB for a code-rewriting project,
and I'm having difficulty with parenthesization. I naïvely expected that
parentheses would be absent from the abstract syntax, being
Neil Mitchell's HLint (http://community.haskell.org/~ndm/hlint/) warns
about extra parens in Haskell code. So, it must have code for
detecting those. I wonder if you can just insert parens liberally in a
first run, and then use his algorithm to remove those that are
unnecessary. The two passes can
I'm using haskell-src-exts together with SYB for a code-rewriting project,
and I'm having difficulty with parenthesization. I naïvely expected that
parentheses would be absent from the abstract syntax, being removed during
parsing and inserted during pretty-printing. It's easy for me to remove
Hi Conal
I don't know if any Haskell src-exts code exists. Norman Ramsey has
published an algorithm for it, plus ML code:
http://www.cs.tufts.edu/~nr/pubs/unparse-abstract.html
I've transcribed the code to Haskell a couple of times for small
expression languages. As far as I remember you need
